问题描述
MATCH (a:station{name:"modakeke"})<-[:ORIGIN]-(b:bus)
RETURN b
上面的查询列出了所有从名为 modakeke 的车站出发的公交车。
我正在尝试编写一个 Cypher 查询,该查询提供所有车站的列表,所有源自 modakeke 的巴士已停止(目的地)
我访问的关系包括
[:ORIGIN] (which means the bus originated from)
[:DESTINATION] (where the bus ended its journey
这是我目前所做的:
MATCH (a:station{name:"modakeke"})<-[:ORIGIN]-(b:bus)->[:DESTINATION]-(a)
RETURN a.name
Bus A
Bus B
Station: Modakeke
Station : Ife
Station: Ibadan
[:Origin]
[:destination]
Bus A [:Origin] from Station: Modakeke
Bus A has [:Destination] I want to KNow which Station Bus A is going
解决方法
箭头 ->
始终指向关系模式 []
的外部。
这是有效的:
<-[:DESTINATION]-
-[:DESTINATION]->
这是无效的(取自您的查询):
->[:DESTINATION]
您的查询应该是:
MATCH (a:station{name:"modakeke"})<-[:ORIGIN]-(b:bus)-[:DESTINATION]->(a)
RETURN a.name